CN212453758U - Widening structure of transfer stairs - Google Patents
Widening structure of transfer stairs Download PDFInfo
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- CN212453758U CN212453758U CN202021211190.9U CN202021211190U CN212453758U CN 212453758 U CN212453758 U CN 212453758U CN 202021211190 U CN202021211190 U CN 202021211190U CN 212453758 U CN212453758 U CN 212453758U
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Abstract
The utility model provides a structure is widened to transfer stair the utility model provides a during the structure is widened to transfer stair, transfer station includes the bottom plate, and the bottom plate has the bottom plate and reserves the hole, and transfer stair include the stair tread of having been under construction, along the length direction of the stair tread of having been under construction, and the left and right sides that is located the bottom plate sets up the bottom plate longeron, sets up in one side of the stair tread of having been under construction and widens the stair tread, widens the stair tread and links firmly through the bar planting mode with the stair tread of having been under construction. The utility model discloses the core that widens to stair is conceived for linking firmly in one side of the stair tread of having been under construction through the bar planting mode and is widened the stair tread, makes like this widen the stair tread and forms independent atress system on the stair tread of having been under construction, need not to destroy the structure of the stair tread of having been under construction, bears the bearing capacity reinforce, construction easy operation, and it is higher to transfer stair to widen back structural strength, uses reliably.
Description
Technical Field
The utility model relates to a track traffic construction technical field, more specifically say, in particular to structure is widened to transfer stair.
Background
With the development of rail transit engineering in China, subway lines form a net shape step by step, and with the increase of intersection points among the lines, the number of transfer stations is increased. For a multi-line transfer station, a subway line is generally opened in stages, and transfer nodes are reserved when the subway line is opened first.
For the T-shaped transfer stairway, when the line is opened firstly, the two wing part structures of the transfer stairway are reserved correspondingly according to the original design width, and the line stairway is opened later to design and construct the transfer stairway according to the original reserved structure. On one hand, because the actual occurrence amount of long-term passenger flow is obviously increased, and the transfer stairway is a passenger flow gathering area, in order to improve the service capacity and the use comfort of the transfer stairway of the transfer station, the two wings of the transfer stairway need to be widened; on the other hand, the transfer stairway crosses the rail running area of the station, the structural columns cannot be arranged in the rail running area, the single span of the widened stair boards is large, the calculated deflection value of the stair boards is large, and the widening implementation difficulty of the widened stair boards is increased.
SUMMERY OF THE UTILITY MODEL
To sum up, to the great problem of the big degree of difficulty is widened to the transfer stair of transfer station, urgent need provide a simple and reliable structure and widen the transfer stair, can avoid the destruction to original stair structure, can carry out reliable connection with original structure again, coordinate the deformation, improve the wholeness to the long-term safe handling of the transfer stair after guaranteeing to widen.
The utility model provides a subway station transfer stair broadens structure, it can carry out effectual widening to subway transfer stair in order to overcome prior art's not enough.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a structure is widened to transfer stair for the transfer stair is widened in the station by bus to the trade.
The transfer station comprises a bottom plate, the bottom plate is provided with a bottom plate reserved hole, the transfer stair comprises a plurality of levels of constructed stair treads, bottom plate longitudinal beams are arranged outside two ends of the bottom plate in the width direction and are vertically arranged, the length direction of the bottom plate longitudinal beams is parallel to the length direction of the bottom plate, the length direction of the bottom plate longitudinal beams is vertical to the length direction of the constructed stair treads,
and the widened stair boards form widened stairs, and the widened stair boards are fixedly connected with the constructed stair boards in a rib planting mode.
Preferably, in the widening structure of the transfer stairway provided by the utility model, in the vertical direction, a bottom plate chiseling hole is arranged at the position on the bottom plate corresponding to the widening stair tread; and the two ends of the bottom plate chiseling except the length direction of the hole are respectively provided with a bottom plate hole edge beam.
Preferably, the bottom plate hole edge beam is perpendicular to the bottom plate longitudinal beam, and two ends of the bottom plate hole edge beam are fixedly connected with the bottom plate longitudinal beam respectively.
Preferably, the length of the bottom plate chiseling hole is the same as that of the bottom plate reserved hole, one end of the bottom plate chiseling hole in the width direction is communicated with the bottom plate reserved hole, and the vertical distance between the other end of the bottom plate chiseling hole in the width direction and the bottom plate longitudinal beam is 300-400 mm.
Preferably, the utility model provides an in the structure is widened to transfer stair, bottom plate distribution muscle is provided in the bottom plate, the bottom plate chisel hole is in through the chisel mode form on the bottom plate chisel edge of hole reserves bottom plate distribution muscle, bottom plate distribution muscle anchor go into extremely widen in the stair tread.
Preferably, the length of the bottom plate distribution rib anchored into the widened ladder floor slab is more than or equal to 34 d.
Preferably, one end of the bottom plate distribution rib is anchored into the widened stair tread, and the other end of the bottom plate distribution rib is located in the bottom plate hole boundary beam.
Preferably, one end of the bottom plate distribution rib, which is positioned in the bottom plate longitudinal beam, is of a hook-shaped structure.
Preferably, in the transfer stair widening structure provided by the utility model, in a transfer station, a station board is arranged above the bottom plate, a station board lower wall is arranged at both ends of the width direction of the station board, the station board lower wall is vertically arranged, the length direction of the station board lower wall is parallel to that of the station board, the length direction of the station board lower wall is perpendicular to that of the constructed stair board, the upper end of the station board lower wall is connected with the station board, the lower end of the station board lower wall is connected with the upper end of the bottom plate longitudinal beam, and the station board lower wall is used for supporting the station board; the platform plate is provided with a platform plate chiseling hole, and the size and the shape of the platform plate chiseling hole are the same as those of the combined reserved bottom plate hole and the combined chiseling hole of the bottom plate; the upper end of the transfer stair penetrates through the reserved hole of the bottom plate and then extends to the position of the chiseling hole of the platform plate, the upper end of the transfer stair is provided with a constructed stair beam, and the constructed stair beam is fixedly connected with the platform plate; the upper end of widening the stair passes extend to after the bottom plate chisels the hole reach the platform board chisels hole department, the upper end of widening the stair is provided with widens the stair roof beam, widen the stair roof beam with the platform board links firmly.
Preferably, the vertical distance between one end of the station plate in the width direction of the chiseling hole and the bottom plate longitudinal beam is 300-400 mm.
Preferably, the constructed stair girders are arranged coaxially with the widened stair girders in a direction parallel to the length direction of the constructed stair treads.
Preferably, two ends of the constructed stair beam are respectively provided with a constructed stair column, one end of the widened stair beam is connected with the constructed stair column, and the other end of the widened stair beam is provided with the widened stair column.
Preferably, the utility model provides an in the structure is widened to transfer stair the platform board chisel respectively is provided with a platform diaphragm orifice boundary beam except hole length direction's both ends all be provided with the bottom plate longeron outside the width direction's of station diaphragm orifice both ends.
Preferably, the platform plate hole edge beam is perpendicular to the bottom plate longitudinal beam, and two ends of the platform plate hole edge beam are fixedly connected with the lower wall of the platform plate respectively.
Preferably, in the widening structure of the transfer stairway provided by the utility model, a constructed stairway side wall is arranged outside the other end of the constructed stairway plate in the length direction, and the top of the constructed stairway side wall is higher than the upper surface of the bottom plate; widening side stair side walls are arranged outside the other ends of the plurality of levels of widening stair boards in the length direction, and the tops of the widening side stair side walls are higher than the upper surface of the bottom plate; a plurality of stair side wall stress main ribs and a plurality of stair side wall distribution ribs are arranged in the constructed stair side wall, the stair side wall stress main ribs extend from the upper end to the lower end of the constructed stair side wall, and the stair side wall distribution ribs extend from one end to the other end of the constructed stair side wall in the width direction; a plurality of stair side wall stress main ribs and a plurality of stair side wall distribution ribs are also arranged in the widened side stair side wall, the stair side wall stress main ribs extend from the upper end to the lower end of the widened side stair side wall, and the stair side wall distribution ribs extend from one end to the other end of the widened side stair side wall in the width direction; and the upper ends of the stressed main ribs of the side walls of the stairs are anchored into the longitudinal beam of the bottom plate.
Preferably, the stair side wall distribution ribs are distributed in the middle of the constructed stair side wall and the middle of the widened stair side wall in the height direction; a water retaining bank is arranged on the upper side surface of the bottom plate; the side wall of the constructed stair is connected with one end of the water retaining bank, and the other end of the water retaining bank is connected with the side wall of the widened side stair to form a U-shaped water retaining structure.
Preferably, the utility model provides an in the structure is widened to transfer stair the equidistant arrangement has a plurality of stair board atress main muscle of having been under construction and a plurality of stair board distribution muscle of having been under construction in the stair board has been under construction, the stair board atress main muscle of having been under construction by the one end of stair board length direction of having been under construction extends to the other end, stair board distribution muscle of having been under construction by the one end of stair board width direction of having been under construction extends to the other end.
Preferably, the distribution ribs of the constructed stair treads are arranged at equal intervals in the length direction of the constructed stair treads; widen equidistant arranging in the stair tread and widen stair tread atress main muscle and a plurality of broaden stair tread distribution muscle, widen stair tread atress main muscle by widen stair tread length direction's one end and extend to the other end, widen stair tread distribution muscle by widen stair tread width direction's one end and extend to the other end.
Preferably, the widened stair tread distribution ribs are arranged at equal intervals in the length direction of the widened stair treads.
Preferably, the length of the stress main rib of the constructed stair tread anchored into the constructed stair beam is 34d-38d, and the length of the stress main rib of the widened stair tread anchored into the widened stair beam is 34d-38 d.
Preferably, in the utility model provides a structure is widened to transfer stair, the stair board of having been under construction with widen the stair board and pass through stair board structure muscle and connect, stair board structure muscle is implanted 20d-22 d's length in the stair board of having been under construction.
Preferably, the space between the stair board structure ribs is 3-4 times of the space between the stair board stress main ribs.
The utility model has the advantages as follows:
the utility model provides a structure is widened to transfer stair for transfer stair widen in the station by bus is traded, and transfer station includes the bottom plate, and the bottom plate has the bottom plate and reserves the hole, and transfer stair include the stair tread of having been under construction, along the length direction of the stair tread of having been under construction, and the left and right sides that is located the bottom plate sets up the bottom plate longeron, sets up in one side of the stair tread of having been under construction and widens the stair tread, widens the stair tread and link firmly through the bar planting mode with the stair tread of having been under construction. The utility model provides an among the structure is widened to transfer stair, the transfer station includes the bottom plate, and the bottom plate has the bottom plate and reserves the hole, and transfer stair set up the bottom plate longeron including the stair tread of having been under construction, along the length direction of the stair tread of having been under construction, and the left and right sides that is located the bottom plate, sets up in one side of the stair tread of having been under construction and widens the stair tread, widens the stair tread and links firmly through the bar planting mode with the stair tread of having been under construction. The utility model discloses the core that widens to stair is conceived for linking firmly in one side of the stair tread of having been under construction through the bar planting mode and is widened the stair tread, makes like this widen the stair tread and forms independent atress system on the stair tread of having been under construction, need not to destroy the structure of the stair tread of having been under construction, bears the bearing capacity reinforce, construction easy operation, and it is higher to transfer stair to widen back structural strength, uses reliably.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
fig. 1 is a schematic structural diagram of a bottom plate in an embodiment of the present invention;
fig. 2 is a schematic structural view of a platform plate according to an embodiment of the present invention;
fig. 3 is a schematic plan view of the widened transfer stairway in the embodiment of the present invention;
fig. 4 is a schematic view of a vertical section structure of the widened transfer stairway in the embodiment of the present invention;
FIG. 5 is a side view of the widened stair boards of the transfer stairs in the embodiment of the present invention;
fig. 6 is a schematic structural view of the stair side wall, the bottom plate and the platform plate in the embodiment of the present invention;
fig. 7 is an enlarged view of the structure at circle a in fig. 4.
In fig. 1 to 7, reference numerals are explained as follows:
the prefabricated building floor comprises a bottom plate 1, a bottom plate reserved hole 2, a constructed stair plate 3, a bottom plate longitudinal beam 4, a widened stair plate 5, a stair plate structural rib 6, a bottom plate chiseling hole 7, a bottom plate hole side beam 8, a bottom plate distribution rib 9, a platform plate 10, a platform plate chiseling hole 11, a constructed stair beam 12, a widened stair beam 13, a constructed stair column 14, a widened stair column 15, a platform plate hole side beam 16, a constructed stair side wall 17, a widened side stair side wall 18, a water retaining sill 19, a constructed stair plate stress main rib 20, a constructed stair plate distribution rib 21, a widened stair plate stress main rib 22, a widened stair plate distribution rib 23, a frame column 24, a platform plate lower wall 25, a stair side wall structural rib 26 and a water retaining sill structural rib 27.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Each example is provided by way of explanation of the invention and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.
In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, and may be, for example, either fixed or detachable; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
Please refer to fig. 1 to 7, wherein fig. 1 is a schematic structural diagram of a bottom plate in an embodiment of the present invention; fig. 2 is a schematic structural view of a platform plate according to an embodiment of the present invention; fig. 3 is a schematic plan view of the widened transfer stairway in the embodiment of the present invention; fig. 4 is a schematic view of a vertical section structure of the widened transfer stairway in the embodiment of the present invention; FIG. 5 is a side view of the widened stair boards of the transfer stairs in the embodiment of the present invention; fig. 6 is a schematic structural view of the stair side wall, the bottom plate and the platform plate in the embodiment of the present invention; fig. 7 is an enlarged view of the structure at circle a in fig. 4.
D herein is the diameter of the corresponding steel bar.
The utility model provides a structure is widened to transfer stair for the transfer stair is widened in the station by bus to the trade. The utility model provides a structure is widened to transfer stair is applicable to transfer stair and is T type structure, L type structure or cross structure isotructure type.
This transfer stair broadens structure includes: the station of taking a transfer includes bottom plate 1, bottom plate 1 has bottom plate reservation hole 2, the stair of taking a transfer includes that a plurality of levels have been under construction stair board 3, all be provided with bottom plate longeron 4 outside 1 width direction's of bottom plate both ends, bottom plate longeron 4 vertically sets up in the station, and certain height has on the direction of height, the length direction of bottom plate longeron 4 is parallel with the length direction of bottom plate 1, the length direction of bottom plate longeron 4 is perpendicular with the length direction of having been under construction stair board 3, the one end of 5 length direction of stair board is widened in the one end connection of 3 length direction of stair board that a plurality of levels have been under construction, stair board 5 forms and widens the stair is widened to a plurality of levels, it links firmly through the bar planting mode with stair board 3 to widen.
Wherein, in the vertical direction, a bottom plate chiseling hole 7 is arranged at the position on the bottom plate 1 corresponding to the widened stair tread 5; the bottom plate chiseling device is characterized in that two ends of a hole 7 in the length direction are respectively provided with a bottom plate hole side beam 8, the bottom plate hole side beams 8 and a bottom plate longitudinal beam 4 are perpendicularly arranged, two ends of the bottom plate hole side beams 8 are fixedly connected with the bottom plate longitudinal beam 4 respectively, the length of the bottom plate chiseling hole 7 is the same as that of a bottom plate reserved hole 2, one end of the bottom plate chiseling hole 7 in the width direction is communicated with the bottom plate reserved hole 2, the perpendicular distance between the other end of the bottom plate chiseling hole 7 in the width direction and the bottom plate longitudinal beam 4 is 300mm-400mm (specifically 300mm, 350mm or 400mm), and 300mm is used as the optimal. A vertical distance of 300mm is reserved for the layout of pipeline channels (power, drain, etc.).
In the transfer station, a station board 10 is provided above the bottom board 1, and if the first opened line has been operated, the station board 10 is an existing structure in the transfer station.
The two ends of the platform plate 10 in the width direction are provided with platform plate 10 lower walls, the platform plate 10 lower walls are vertically arranged, the length direction of the platform plate 10 lower walls is parallel to the length direction of the platform plate 10, the length direction of the platform plate 10 lower walls is perpendicular to the length direction of the constructed stair boards 3, the upper ends of the platform plate 10 lower walls are connected with the platform plate 10, the lower ends of the platform plate 10 lower walls are connected with the upper ends of the bottom plate longitudinal beams 4, and the platform plate 10 lower walls are used for supporting the platform plate 10; the platform board 10 has a platform board chiseling hole 11, and the size and shape of the platform board chiseling hole 11 are the same as the size and shape of the combined bottom board reserved hole 2 and bottom board chiseling hole 7; the upper end of the transfer stair penetrates through the reserved hole 2 of the bottom plate and then extends to the position of a chiseling hole 11 of the platform plate, the upper end of the transfer stair is provided with a constructed stair beam 12, and the constructed stair beam 12 is fixedly connected with the platform plate 10; the upper end of the widened stair penetrates through the bottom plate chiseling hole 7 and then extends to the platform plate chiseling hole 11, and the upper end of the widened stair is provided with a widened stair beam 13, and the widened stair beam 13 is fixedly connected with the platform plate 10.
The vertical distance between one end of the platform board chiseling hole 11 in the width direction and the bottom plate longitudinal beam 4 is 300mm-400mm (specifically, 300mm, 350mm or 400mm), and 300mm is used as the optimal vertical distance dimension. The constructed stair girders 12 are arranged coaxially with the widened stair girders 13 in a direction parallel to the length direction of the constructed stair treads 3.
For the constructed stair beam 12, two constructed stair posts 14 are respectively arranged at two ends of the constructed stair beam, one end of the widened stair beam 13 is connected with the constructed stair posts 14, and the other end of the widened stair beam 13 is provided with a widened stair post 15.
In order to increase the structural strength of the station, the platform board chisels are respectively provided with a platform board hole side beam 16 except for two ends of the length direction of the hole 11, and the two ends of the width direction of the platform board 10 are respectively provided with a bottom board longitudinal beam 4; the platform plate hole boundary beam 16 is perpendicular to the bottom plate longitudinal beam 4, and two ends of the platform plate hole boundary beam 16 are fixedly connected with the lower wall of the platform plate 10 respectively.
Inside the station, a constructed stair side wall 17 is arranged outside the other end of the plurality of levels of constructed stair plates 3 in the length direction, and the top of the constructed stair side wall 17 is higher than the upper surface of the bottom plate 1; the other end of the plurality of levels of extended stair plates 5 in the length direction is externally provided with an extended side stair side wall 18, and the top of the extended side stair side wall 18 is higher than the upper surface of the bottom plate 1; a plurality of stair side wall stressed main ribs and a plurality of stair side wall distribution ribs are arranged in the constructed stair side wall 17, the stair side wall stressed main ribs extend from the upper end to the lower end of the constructed stair side wall 17, and the stair side wall distribution ribs extend from one end to the other end of the constructed stair side wall 17 in the width direction; a plurality of stair side wall stress main ribs and a plurality of stair side wall distribution ribs are also arranged in the widened side stair side wall 18, the stair side wall stress main ribs extend from the upper end to the lower end of the widened side stair side wall 18, and the stair side wall distribution ribs extend from one end to the other end in the width direction of the widened stair side wall; the upper ends of the stressed main ribs of the side walls of the stairs are anchored into the longitudinal beam 4 of the bottom plate. The stair side wall distribution ribs are distributed in the middle of the height direction of the constructed stair side wall 17 and the widening side stair side wall 18; a water retaining bank 19 is arranged on the upper side surface of the bottom plate 1; the side wall 17 of the constructed stair is connected with one end of a water retaining bank 19, and the other end of the water retaining bank 19 is connected with the side wall 18 of the widened side stair to form a U-shaped water retaining structure.
Specifically, a plurality of constructed stair tread stress main ribs 20 and a plurality of constructed stair tread distribution ribs 21 are arranged in the constructed stair tread 3 at equal intervals, the constructed stair tread stress main ribs 20 extend from one end of the constructed stair tread 3 in the length direction to the other end, and the constructed stair tread distribution ribs 21 extend from one end of the constructed stair tread 3 in the width direction to the other end.
Preferably, the constructed stair tread distribution ribs 21 are arranged at equal intervals in the length direction of the constructed stair tread 3; it widens stair tread atress main muscle 22 and widens stair tread distribution muscle 23 with a plurality of roots to have equidistant arranged in widening stair tread 5, widens stair tread atress main muscle 22 and extends to the other end by the one end of widening 5 length direction of stair tread, widens stair tread distribution muscle 23 and extends to the other end by the one end of widening 5 width direction of stair tread.
The widened stair board distribution ribs 23 are arranged at equal intervals in the length direction of the widened stair boards 5, the anchoring length of the constructed stair board stress main ribs 20 is 34d-38d, namely the anchoring length of the constructed stair board stress main ribs 20 into the constructed stair beam 12 is 34d-38 d; the anchoring length of the widened stair tread stress main rib 22 is 34d-38d, namely the anchoring length of the widened stair tread stress main rib 22 in the widened stair beam is 34d-38d, and d is the radius of the widened stair tread stress main rib 22 of the constructed stair tread stress main rib 20.
In the utility model, the constructed stair plates 3 are connected with the widened stair plates 5 through the stair plate structural ribs 6, and the stair plate structural ribs 6 are embedded into the constructed stair plates 3 for 20d-22 d; the distance between the stair board structural ribs 6 is 3-4 times of the distance between the stair board stressed main ribs.
Roughening one side surface of the constructed stair tread 3, which is required to be provided with the widened stair tread 5, arranging an adhesive on the roughened surface, and implanting stair tread structural ribs 6 into the constructed stair tread 3; the reinforcing steel bar part of the stair boards 5 is widened by binding, and concrete is poured.
The widening construction process for the transfer stairway comprises the following steps:
the method comprises the following steps that firstly, concrete of a bottom plate 1 in a range needing to be widened in the transfer stair is chiseled in a vibration-free cutting mode, and chiseled bottom plate distribution ribs are reserved;
chiseling the reserved platform plate structure;
chiseling concrete of the two implemented triangular block ladder plates, reserving main ribs of the triangular block ladder plates, and straightening the main ribs of the triangular block ladder plates for later use;
fourthly, chiseling the side surface of the constructed stair tread 3, coating adhesive on the chiseling surface, and implanting stair tread structural ribs 6 into the constructed stair tread 3;
step five, binding and widening the stair plates 5, the stair beams 13 and the reinforcing steel bars of the stair columns 15, pouring concrete, and anchoring the upper parts of the stressed main reinforcements 22 of the widened stair plates into the widened stair beams 13;
sixthly, chiseling the reinforcing steel bars in the bottom plate 1 out, and then anchoring the reinforcing steel bars into the side walls of the stairs in two layers along the height of the beam;
step seven, binding 18 steel bars of the side walls of the widened side stairs and pouring concrete;
and step eight, constructing the water retaining bank 19, and connecting the water retaining bank 19 with the constructed stair side wall 17 and the part of the widened side stair side wall 18, which is higher than the bottom plate 1, to form a U-shaped water retaining structure.
The stairs and the surrounding building structures which need to be widened in the transfer station are as follows:
A floor stringer 4 is provided at each end of the floor in the width direction of the floor 1. This structure can also be understood as: along the longitudinal direction of the bottom plate 1, bottom plate longitudinal beams 4 are provided on both sides (left and right sides) of the bottom plate 1.
The constructed stair plate 3 is a substantially rectangular plate, the direction parallel to the long side thereof is the longitudinal direction of the constructed stair plate, and is shown as pointing from the top downward (or pointing from the bottom upward) in fig. 3, and the direction parallel to the wide side thereof is the width direction of the constructed stair plate, and is shown as pointing from the left to the right (or pointing from the right to the left) in fig. 3. The length direction of the bottom plate 1 is parallel to the width direction of the stair plates of two wings of the T-shaped stair.
The length of the bottom plate chiseling hole 7 is the same as that of the bottom plate reserved hole 2, one end of the bottom plate chiseling hole 7 in the width direction is communicated with the bottom plate reserved hole 2, and the vertical distance between the other end of the bottom plate chiseling hole 7 in the width direction and the bottom plate longitudinal beam 4 is 300 mm. Specifically, a bottom plate reserved hole 2 is formed in the bottom plate 1, and the width of the bottom plate reserved hole 2 is consistent with the length of the constructed stair tread 3. When the stair boards need to be widened, the widened stair boards 5 need to penetrate through the bottom plate 1, the positions of the holes 7 of the bottom plate need to be reserved on the bottom plate 1, and before the stair boards are widened, part of the concrete of the bottom plate 1 is chiseled, so that the holes 7 of the bottom plate are formed in one side of the reserved holes 2 of the bottom plate. The chiseled bottom plate pre-hole 2 and the chiseled bottom plate hole 7 form a larger hole structure.
Specifically, the range of the bottom plate gouging holes 7 is as follows: compared with the reserved hole 2 of the bottom plate, the length of the chiseling hole 7 of the bottom plate is unchanged, and the width of the chiseling hole 7 of the bottom plate is 300mm to the side line distance of the reserved hole 2 of the bottom plate from the outer edge line of the longitudinal beam 4 of the bottom plate (the longitudinal beam 4 of the chiseling side).
Specifically, have bottom plate distribution muscle 9 in bottom plate 1, bottom plate chisel hole 7 forms on bottom plate 1 through the chisel mode, reserves bottom plate distribution muscle 9 at the hole edge that bottom plate chisel hole 7, and bottom plate distribution muscle 9 anchors to widening in the stair board 5. One end of the bottom plate distribution rib 9 is anchored into the widened stair board 5, the other end of the bottom plate distribution rib 9 is positioned in the bottom plate longitudinal beam 4, and one end of the bottom plate distribution rib 9, which is positioned in the bottom plate longitudinal beam 4, is of a hook-shaped structure (90-degree hook).
Specifically, the length of the bottom plate distribution ribs 9 anchored into the widened ladder floor 5 is more than or equal to 34d
In the transfer station, a station platform plate lower wall 25 is arranged at each of two ends of the platform plate 10 in the width direction, the station platform plate lower wall 25 is vertically arranged, the length direction of the station platform plate lower wall 25 is parallel to the length direction of the platform plate 10, the length direction of the station platform plate lower wall 25 is perpendicular to the length direction of the constructed stair plate 3, the upper end of the station platform plate lower wall 25 is connected with the station platform plate 10, the lower end of the station platform plate lower wall 25 is connected with the upper end of the bottom plate longitudinal beam 4, and the station platform plate lower wall 25 is used for supporting the station platform plate 10.
The station board 10 is arranged above the bottom board 1, the station board 10 is arranged on the upper layer of the bottom board 1 (the upper end of the bottom board longitudinal beam 4), the station board 10 is provided with a station board chiseling hole 11, and the size and the shape of the station board chiseling hole 11 are the same as those of a hole structure formed by combining the bottom board reserved hole 2 and the bottom board chiseling hole 7. The platform board chiseling hole 2 is a rectangular hole structure, and one end in the width direction of the platform board chiseling hole is one end which corresponds to the other end in the width direction of the bottom board chiseling hole 7 up and down.
One end of the constructed stair plate 3 penetrates through the reserved hole 2 of the bottom plate and then extends to the edge of the chiseling hole 11 of the platform plate, the end part of the constructed stair beam 12 is provided with a constructed stair beam, and the constructed stair beam 12 is fixedly connected with the platform plate 10; one end of the widened stair board 5 penetrates through the reserved hole 2 of the bottom board and then extends to the edge of the chiseling hole 11 of the platform board, a widened stair beam 13 is arranged at the end part of the widened stair board, and the widened stair beam 13 is fixedly connected with the platform board 10.
The platform deck 10 needs to be holed before the stair board can be widened. The length of the station board chiseling hole 11 is generally the same as the length of the base board pre-cut hole 2, although it may be suitably lengthened or shortened. The width of the platform board chiseling hole 11 is equal to the width of the floor reservation hole 2 plus the width of the floor chiseling hole 7.
The station board 10 is arranged on the upper side of the bottom board 1 through a station board lower wall 25, the bottom of the station board lower wall 25 is connected with the bottom board longitudinal beam 4, and the top of the station board lower wall 25 is connected with the station board 10.
Specifically, the platform board lower wall 25 is a structure supporting the platform board 10 above the bottom board 1, and the platform board lower wall 25 is made of C35 concrete and has a thickness of 200 mm. The thickness of the station plate 10 may vary slightly, for example up to 250mm at the maximum and up to 150mm at the minimum.
Constructed stair tread 3
The constructed stair tread 3 is a constructed structure, and when the constructed stair tread is widened, the length of the constructed stair tread 3 is basically unchanged (only the side surface of the constructed stair tread is roughened), and the width of the constructed stair tread 3 is unchanged. One side of the constructed stair tread 3 is widened, the stair tread 5 is widened, the other side of the constructed stair tread 3 is unchanged in structure, one side of the constructed stair tread 3, which is unchanged in structure, is located at the upper side of the constructed stair tread 3, and the constructed stair side wall 17 is arranged.
The constructed stair side wall 17 is made of C35 concrete, the thickness of the constructed stair side wall 17 is 200mm, and the thickness range of the constructed stair side wall 17 is 150mm to 250 mm. The bottom of the constructed stair side wall 17 is cast in place with the constructed stair plate 3, the top surface of the constructed stair side wall 17 is 300mm higher than the upper side surface of the bottom plate 1, the constructed stair side wall 17 is tightly attached to the inner edge line of the bottom plate longitudinal beam 4 (the bottom plate longitudinal beam 4 with the unchanged structure), three layers of stair side wall construction ribs 26 are implanted at equal intervals along the beam height of the bottom plate longitudinal beam 4, and the implantation depth is 20 d.
In the length direction of the constructed stair tread 3, one end of the constructed stair tread 3 passes through the reserved hole of the bottom plate and then is arranged close to the edge of the platform slab chiseling hole 11, the end part of the constructed stair tread is provided with a constructed stair beam 12 and a constructed stair column 14, the constructed stair column 14 is arranged at the two ends of the constructed stair beam 12, and the total width of the constructed stair beam 12 and the constructed stair column 14 is consistent with the length of the constructed stair tread 3. The constructed stair girders 12 and the constructed stair posts 14 are disposed on the bottom surface of the station floor 10, and if there is no platform plate hole edge beam 16 structure at the position where the constructed stair girders 12 and the constructed stair posts 14 need to be disposed on the station floor 10, the constructed stair girders 12 and the constructed stair posts 14 can function as platform plate hole edge beams 16. If the platform plate hole edge beam 16 structure is provided at a position where the constructed stair girders 12 and the constructed stair posts 14 need to be provided on the platform plate 10, the constructed stair girders 12 and the constructed stair posts 14 are provided on the bottom surfaces of the platform plate hole edge beams 16. The other end of the constructed stair plate 3 is fixedly connected with a building structure beside the ground rail.
Specifically, the reinforcing bars in the construction stair plates are anchored into the side walls 17 of the constructed stairs.
The platform board chisel is provided with a platform board hole boundary beam 16 except the two ends of the length direction of the hole 11, the two ends of the width direction of the platform board 10 are provided with a bottom board longitudinal beam 4, the bottom board longitudinal beam 4 is vertically arranged, the length direction of the bottom board longitudinal beam 4 is parallel to the length direction of the bottom board 1, the length direction of the bottom board longitudinal beam 4 is perpendicular to the length direction of the constructed stair boards 3, the platform board hole boundary beam 16 is perpendicular to the bottom board longitudinal beam 4, and the two ends of the platform board hole boundary beam 16 are fixedly connected with the platform board lower wall 25 respectively.
Along the width direction of the constructed stair plate 3, one end of the platform plate chisel of the hole 11 is connected with the constructed stair beam 12 and widens the stair beam 13, the other end of the platform plate chisel of the hole 11 is provided with a platform plate hole side beam 16, the platform plate hole side beam 16 is perpendicular to the bottom plate longitudinal beam 4, and two ends of the platform plate hole side beam 16 are fixedly connected with the bottom plate longitudinal beams 4 on two sides of the bottom plate 1 respectively.
Widened stair board
The widened stair boards are non-prefabricated boards, and operations such as steel bar binding, formwork erecting, concrete pouring and the like need to be carried out on site.
The widened stair boards are fixedly connected with the constructed floor slabs in a bar planting mode. Specifically, the side surface of the constructed stair plate 3, which is to be widened, is roughened, the roughened side surface of the stair plate is coated with an adhesive, and the stair plate structure ribs 6 are implanted into the constructed stair plate 3. Like this, widen the stair board and realize that the first level on the stair board 3 of having been under construction is fixed. The surface of the intersection of the bottom plate chiseling hole 7 and the widened stair slab 5 is chiseled, chiseled bottom plate distribution ribs 9 are anchored into the widened stair slab 5, the anchoring length is not less than 34d, and secondary fixing of the slab is achieved.
The widened stair tread 5 penetrates through one end of the bottom plate chiseling hole 7 from bottom to top, the end part of the widened stair tread 13 is provided with the widened stair beam 13 and the widened stair column 15, one end of the widened stair beam 13 is connected with the constructed stair column 14, the other end of the widened stair beam 13 is provided with the widened stair column 15, the widened stair beam 13 is coaxial with the constructed stair beam 12, and the widened stair beam 13 and the constructed stair beam 12 are perpendicular to the bottom plate longitudinal beam 4.
Before the widened stair treads 5 are arranged, the bottom plate 1 needs to be subjected to hole expansion, namely, in the vertical direction, a bottom plate chiseling hole 7 is arranged at the position, corresponding to the widened stair treads 5, on the bottom plate 1; in the length direction of the widened stair boards 5, bottom board hole edge beams 8 are respectively arranged at the front end and the rear end of the bottom board chiseling holes 7; the bottom plate hole boundary beam 8 is perpendicular to the bottom plate longitudinal beam 4, and two ends of the bottom plate hole boundary beam 8 are fixedly connected with the bottom plate longitudinal beam 4 respectively.
The above-mentioned position of the bottom plate 1 corresponding to the widened stair treads 5 does not correspond completely, and the length of the bottom plate chiseling hole 7 may be slightly greater or slightly smaller than the length of the widened stair treads 5, but the width of the bottom plate chiseling hole 7 must be identical to (or slightly greater than) the width of the widened stair treads 5.
Specifically, a plurality of stair side wall stress main ribs and a plurality of stair side wall distribution ribs are arranged in the constructed stair side wall 17, the stair side wall stress main ribs extend from the upper end to the lower end of the constructed stair side wall, the stair side wall distribution ribs extend from one end in the width direction of the constructed stair side wall to the other end, a plurality of stair side wall stress main ribs and a plurality of stair side wall distribution ribs are also arranged in the widened side stair side wall, the stair side wall stress main ribs extend from the upper end to the lower end of the widened side stair side wall, the stair side wall distribution ribs extend from one end in the width direction of the widened stair side wall to the other end, the upper end of the stair side wall stress main ribs are anchored into the bottom plate longitudinal beam 4, and the stair distribution ribs are distributed in the middle of the height direction of the constructed stair side wall 17 and the widened side stair side wall 18.
In the constructed stair tread 3, constructed stair tread stress main ribs 20 are arranged at equal intervals along the transverse direction of the constructed stair tread 3 (the length direction of the constructed stair tread 3), the upper part of the constructed stair tread stress main ribs 20 is anchored into the constructed stair beam 12, and constructed stair tread distribution ribs 21 are arranged at equal intervals along the longitudinal direction of the constructed stair tread 3.
In widening stair tread 5, widen stair tread atress owner muscle 22 along the horizontal equidistant arrangement of widening stair tread 5, widen in stair beam 13 is gone into to the upper portion anchor of stair tread atress owner muscle 22, along the vertical equidistant arrangement of widening stair tread 5 widen stair tread distribution muscle 23. Specifically, the anchoring length of the constructed stair plate stress main rib 20 is 34d-38d, and the anchoring length of the widened stair plate stress main rib 22 is 34d-38 d.
The constructed stair plates 3 are connected with the widened stair plates 5 through stair plate structural ribs 6, the stair plate structural ribs 6 are embedded into the constructed stair plates 3 for 20d-22d, the distance between the stair plate structural ribs 6 is 3 times-4 times of the distance between the stair plate stress main ribs, for example, the distance between the stair plate stress main ribs 20 is 150mm, and the distance between the stair plate structural ribs 6 is 450mm-600 mm.
Stair side wall
The stair side wall is divided into a constructed stair side wall 17 and an expanded side stair side wall 18, the constructed stair side wall 17 is located above the side, not expanded, of the constructed stair tread 3, and the expanded side stair side wall 18 is located above the side, far away from the constructed stair tread 3, of the expanded stair tread 5.
The top surface of the stair side wall is higher than the height of 300mm of the upper side surface of the bottom plate 1, the part of the stair side wall higher than the bottom plate is also used as a water retaining ridge structure, a water retaining ridge 19 is arranged on the upper side surface of the bottom plate 1 and close to the position of the bottom plate reserved hole 2, the bottom plate 1 is provided with a bottom plate chiseling hole 7, the water retaining ridge 19 is prolonged, the stair side wall is connected with the water retaining ridge 19 (including an extension part), and a U-shaped water retaining structure which surrounds the bottom plate reserved hole 2 and chisels the outer edge of the hole 7 can be formed on the upper side surface of the bottom plate 1.
The utility model provides an in the structure is widened to transfer stair, the transfer station includes bottom plate 1, and bottom plate 1 has the bottom plate and reserves hole 2, and transfer stair set up bottom plate longeron 4 including the stair tread 3 that has been under construction, along the length direction of stair tread 3 that has been under construction, and the left and right sides that is located bottom plate 1 sets up, sets up in one side of stair tread 3 that has been under construction and widens stair tread 5, widens stair tread 5 and has been under construction stair tread 3 and link firmly through the bar planting mode. The utility model discloses the core that widens to stair thinks about for linking firmly in one side of having under construction stair tread 3 through the bar planting mode and widening stair tread 5, makes like this widen stair tread 5 and form independent atress system on having under construction stair tread 3, need not to destroy the structure of having under construction stair tread, and bearing capacity is strong, and construction easy operation widens that back structural strength is higher, uses reliably.
Roughening one side surface of the constructed stair tread 3, which is required to be provided with the widened stair tread 5, arranging an adhesive on the roughened surface, and implanting stair tread structural ribs 6 into the constructed stair tread 3; the reinforcing steel bar part of the stair boards 5 is widened by binding, and concrete is poured.
Specifically, the detailed steps of the widening construction of the transfer stairway are as follows:
the method comprises the following steps that firstly, concrete of a bottom plate 1 in a range needing to be widened in the transfer stair is chiseled in a vibration-free cutting mode, and reinforcing steel bars are distributed on the chiseled bottom plate 1;
secondly, chiseling the reserved platform plate 10 structure;
chiseling concrete of the two implemented triangular block ladder plates, reserving main ribs of the triangular block ladder plates, and straightening the main ribs of the triangular block ladder plates for later use;
fourthly, chiseling the side surface of the constructed stair plate, coating adhesive on the chiseling surface, and implanting stair plate structure ribs 6 into the constructed stair plate 3;
step five, binding and widening the stair plates 5, the stair beams 13 and the reinforcing steel bars of the stair columns 15, pouring concrete, and anchoring the upper parts of the stressed main reinforcements 22 of the widened stair plates into the widened stair beams 13;
sixthly, chiseling the reinforcing steel bars in the bottom plate 1 out, and then anchoring the reinforcing steel bars into the side walls of the stairs in two layers along the height of the beam;
step seven, binding reinforcing steel bars of the side walls of the widened side stairs and pouring concrete;
and step eight, constructing the water retaining bank 19, and connecting the water retaining bank 19 with the constructed stair side wall 17 and the part of the widened side stair side wall higher than the bottom plate 1 to form a U-shaped water retaining structure.
The utility model discloses in, the length and the width that the hole 2 was reserved to the bottom plate are "T" type and transfer the size of the stair board of having been under construction of stair both wings. The length of the bottom plate chiseling hole 7 is consistent with that of the bottom plate reserved hole 2, and the width is the distance from the inner edge line of the bottom plate longitudinal beam 4 on the widening side to the edge line of the bottom plate reserved hole 2 by expanding 300 mm. The surface of the intersection of the bottom plate chiseling hole 7 and the widened stair slab 5 is chiseled, chiseled bottom plate distribution ribs 9 are anchored into the widened stair slab 5, and the anchoring length is not less than 34 d. The floor longitudinal beam 4 is a frame beam of a station main body structure. The frame column 24 is a frame column of the main structure of the station. The bottom plate hole side beam 8 is tightly attached to the edge of the bottom plate reserved hole 2 and is perpendicular to the bottom plate longitudinal beam 4. The width of the station board chiseling hole 11 is the distance from the inner edge line of the bottom board longitudinal beam 4 on the widening side to the inner edge line of the bottom board longitudinal beam 4 on the other side by expanding 300 mm. The platform plate hole edge beam 16 is arranged close to the edge of the platform plate chiseling hole 11 and is cast in situ perpendicular to the bottom plate longitudinal beam 4. The constructed stair boards 3 are made of C35 concrete and have the thickness of 300 mm. The constructed stair plate stress main ribs 20 are transversely arranged at equal intervals along the constructed stair plate 3, the upper parts of the constructed stair plate stress main ribs 20 are anchored into the constructed stair beam 12, and the anchoring length is 34 d; the constructed stair tread distribution ribs 21 are arranged at equal intervals in the longitudinal direction of the constructed stair tread 3. The constructed stair girders 12 are made of C35 concrete and have a height x width of 500mmx300 mm. The constructed stair posts 14 are made of C35 concrete, and the height x width is 300mmx300 mm. The constructed triangular stair boards are made of C35 concrete and have the thickness of 300 mm. Chiseling out the concrete of the two implemented triangular blocks of the stair boards, welding the main reinforcements after straightening with the stress main reinforcements 22 of the widened stair boards, wherein the lap joint length and the area percentage of the joints need to meet the standard requirements. The constructed triangular stair treads are the treads at the corners of the stairs (two dark areas in figure 3). The constructed triangular stair boards and the constructed stair boards 3 are constructed simultaneously, so that the concrete needs to be chiseled off when the stair boards 5 are widened in construction, but the internal reinforcing steel bars are reserved and welded with the internal reinforcing steel bars widening the stair boards 5, and the firmness of widening the stair boards 5 is increased.
Widen stair board 5 and adopt C35 concrete to make, its thickness is 300mm, arranges to widen stair board atress main reinforcement 22 along widening the horizontal equidistant of stair board 5, and the upper portion anchor of widening stair board atress main reinforcement 22 is gone into in widening stair roof beam 13, and anchor length 34d arranges to widen stair board distribution muscle 23 along widening the vertical equidistant of stair board 5. The widened stair beams 13 are made of C35 concrete, and the height x width of the widened stair beams is 500mmx300 mm. The widened stair post 15 is made of C35 concrete, and the height x width of the widened stair post is 300mmx300 mm. The widening side stair side wall 18 is made of C35 concrete, the thickness of the widening side stair side wall is 200mm, the bottom of the widening side stair side wall 18 and the widening stair plates 5 are cast in situ, the top of the widening side stair side wall 18 is 300mm higher than the upper side face of the bottom plate 1, and the widening side stair side wall also serves as a water retaining ridge structure. The distance between the anchor bars and the inner side edge line of the bottom plate longitudinal beam 4 on the widening side is 300mm, the two layers of steel bars on the upper layer and the lower layer of the bottom plate 1 are chiseled out, then the two layers of steel bars are anchored into the side wall 18 of the widening side stair by 34d, and the anchor steel bars are hooked by 90 degrees. The water retaining ridge 19 is made of C35 concrete, and the height x width of the water retaining ridge is 300mmx100 mm. The water retaining bank 19 is connected with the parts of the constructed stair side wall 17 and the widened side stair side wall 18 which are higher than the bottom plate 1 to form a U-shaped water retaining structure. Set up manger plate bank structure muscle in manger plate bank 19, manger plate bank structure muscle is implanted in bottom plate hole boundary beam 8, along manger plate bank 19 height and bottom plate hole boundary beam 8 width be "L" type about the lower floor arrange waterproof mortar and waterproof coating. The constructed stair plates 3 are connected with the widened stair plates 5 through stair plate structural ribs 6, the stair plate structural ribs 6 are implanted into the constructed stair plates 320d, and the distance is 3 times of the distance between the main stress ribs of the stair plates.
The constructed stair board stress main reinforcement 20 and the widened stair board stress main reinforcement 22 both adopt HRB400 steel bars with E, the diameter is 16mm or 18mm, and the arrangement distance range is within 100 mm-200 mm.
The E-bar is an earthquake-resistant steel bar specified by new specifications, and the symbol HRB400E of the E-bar refers to a common hot-rolled ribbed steel bar with the strength level of 400MPa and earthquake resistance.
The stair plate structural ribs 6 adopt HRB400 steel bars with E, the diameter is 12mm, and the space is 3 times of the space of the stair plate stress main ribs.
HRB400 steel bars with E are adopted as the stress main bars of the constructed stair side wall, the diameter of each steel bar is 12mm or 14mm, and the distribution intervals are 200 mm. HRB400 steel bars with E are adopted as the widened distribution ribs of the side wall of the constructed stair, the diameter of the HRB400 steel bars is 10mm or 12mm, and the distribution intervals are 200 mm.
The stair side wall construction ribs 26 are HRB400 steel bars with E, the diameter of each HRB400 steel bar is 10mm or 12mm, and the distribution intervals are 200 mm.
And the steel bars in the bottom plate are chiseled out and then anchored into the side wall of the stair 34d, and the anchoring steel bars are hooked for 90 degrees.
The water retaining ridge structure rib 27 adopts HRB400 steel bars with E, the diameter is 8mm or 10mm, the distribution interval is 250mm, and the depth of the embedded bottom plate hole boundary beam 8 is 20 d. The water retaining bank structure ribs 27 arranged in the front row and the rear row are implanted into the edge beam 8 of the bottom plate hole, and waterproof mortar and waterproof paint are arranged on the upper layer and the lower layer in an L shape along the height of the water retaining bank 19 and the width of the edge beam 8 of the bottom plate hole.
The utility model discloses well institute's bar planting adopts chemistry bar planting, and the bar planting interval and to concrete member margin should not all be less than 5d (d is the bar diameter). The embedded steel bars are anchored in the concrete base layer and go deep into the core area of the structure surrounded by the steel bars.
The chemical bar planting specifically comprises the following steps: drilling a hole on a concrete base material, then injecting high-strength bar-planting glue, inserting a reinforcing steel bar, and bonding the reinforcing steel bar and the base material into a whole after the glue is cured.
Through the structural design, the T-shaped transfer stair widening structure of the subway station provided by the utility model has the advantages that the widened stair becomes an independent stress system, the structure of the constructed stair plates is not required to be damaged, and the load bearing capacity is strong; through being connected with the proper amount of bar planting of the stair tread that has been under construction, coordinate the deformation, reduce the destruction to the fitment veneer. The side wall protruded bottom plates 1 on the two sides of the transfer stair and the water retaining ridges 19 are arranged in a U shape, so that water is effectively prevented from flowing into the stair well. The widened stair structure has the advantages of definite stress, reliable node connection, strong bearing capacity and simple and feasible construction method.
The utility model discloses a concrete implementation flow as follows:
after the construction of the structure of the station is finished (comprising the structures of a frame beam, a frame longitudinal beam, a frame column 24, a bottom plate 1 and the like), transfer nodes are reserved, the station transfer stairway is opened after the subway is opened and operated and constructed, and in order to improve the service capacity and the use comfort of the transfer stairway of the transfer station, two wings of the transfer stairway need to be widened.
Firstly, chiseling the structure on the bottom plate 1 in the range needing to be widened during the transfer of the stairs, and adopting vibration-free cutting to ensure the operation safety of the existing line in the construction period. In order to widen the support of the stair tread, the chiseled bottom plate 1 is provided with reinforcing steel bars which are anchored into the widened stair tread 5, and the anchoring length is more than or equal to 34 d.
And secondly, chiseling out structures on the reserved station plates 10, wherein the width of each structure is the distance from the inner edge line of the bottom plate longitudinal beam 4 on the widening side to the inner edge line of the bottom plate longitudinal beam 4 on the other side, and the chiseling-out structures comprise the station plates 10, the platform beams and the platform plate lower walls 25 in the range.
And thirdly, chiseling out the concrete of the two implemented triangular block ladder boards, straightening the oblique main rib, and then welding the oblique main rib with the main rib of the widened section ladder board, wherein the lap joint length and the joint area percentage need to meet the standard requirements.
And fourthly, after the concrete side surface of the constructed stair plate is roughened, coating a layer of adhesive on the original concrete joint surface, and implanting stair plate structure ribs 6 into the middle part of the constructed stair plate 3 with the depth of 20 d.
Fifthly, the widened part is used for transferring stair boards, ladder beams, ladder column reinforcing steel bars, erecting a mold and pouring concrete. Wherein the upper part of the widened stair tread stress main rib 22 is anchored into the widened stair beam 13 by an anchoring length 34 d.
Sixthly, the distance between the inner side edge lines of the bottom plate longitudinal beams 4 on the widening side is 300mm, the upper and lower layers of steel bars in the bottom plate 1 are dug out, then the rear edge beam is anchored into the side wall of the stair in two layers, and the anchoring steel bars are hooked in 90 degrees.
Seventhly, widening the binding of reinforcing steel bars of the side wall of the side stair, erecting a mold and pouring concrete. The bottom and the widened stair boards 5 are cast in situ, the top is 300mm higher than the top of the bottom board 1, and the bottom and the widened stair boards are also used as longitudinal water retaining ridge structures.
Eighthly, constructing a transverse water retaining bank 19, implanting structural ribs of the water retaining bank 19 into the side beam 8 of the bottom plate hole, and arranging waterproof mortar and waterproof paint on the upper layer and the lower layer in an L shape along the height of the water retaining bank 19 and the width of the side beam 8 of the bottom plate hole. The water retaining bank 19 and the parts of the constructed stair side wall 17 and the widened side stair side wall which are higher than the bottom plate 1 are in a U-shaped water retaining structure.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A widening structure of a transfer stair is used for widening the transfer stair in a transfer station and is characterized in that,
the transfer station comprises a bottom plate (1), the bottom plate is provided with a bottom plate reserved hole (2), the transfer stair comprises a plurality of levels of constructed stair plates (3), bottom plate longitudinal beams (4) are arranged outside two ends of the bottom plate in the width direction and are vertically arranged, the length direction of the bottom plate longitudinal beams is parallel to the length direction of the bottom plate, the length direction of the bottom plate longitudinal beams is vertical to the length direction of the constructed stair plates,
and the one end of the constructed stair tread in the length direction is connected with the one end of the widened stair tread (5) in the length direction, the widened stair tread forms a widened stair in a plurality of stages, and the widened stair tread is fixedly connected with the constructed stair tread in a bar planting mode.
2. The transfer stair widening structure according to claim 1,
in the vertical direction, a bottom plate chiseling hole (7) is arranged at the position, corresponding to the widened stair tread, on the bottom plate;
the two ends of the bottom plate except the length direction of the hole are respectively provided with a bottom plate hole edge beam (8);
the bottom plate hole edge beam is perpendicular to the bottom plate longitudinal beam, and two ends of the bottom plate hole edge beam are fixedly connected with the bottom plate longitudinal beam respectively;
the length of the bottom plate chiseling hole is the same as that of the bottom plate reserved hole, one end of the bottom plate chiseling hole in the width direction is communicated with the bottom plate reserved hole, and the vertical distance between the other end of the bottom plate chiseling hole in the width direction and the bottom plate longitudinal beam is 300-400 mm.
3. The transfer stair widening structure according to claim 2,
bottom plate distribution ribs are arranged in the bottom plate, the bottom plate chiseling holes are formed in the bottom plate in a chiseling mode, bottom plate distribution ribs (9) are reserved at the edges of the bottom plate chiseling holes, and the bottom plate distribution ribs are anchored into the widened stair treads;
the length of the bottom plate distribution ribs anchored into the widened stair tread is not less than 34 d;
one end of the bottom plate distribution rib is anchored into the widened stair board, and the other end of the bottom plate distribution rib is positioned in the bottom plate hole boundary beam;
one end of the bottom plate distribution rib, which is positioned in the bottom plate longitudinal beam, is of a hook-shaped structure.
4. The transfer stair widening structure according to claim 2,
in a transfer station, a station board (10) is arranged above a bottom board, station board lower walls are arranged at two ends of the station board in the width direction and are vertically arranged, the length direction of the station board lower walls is parallel to that of the station board, the length direction of the station board lower walls is perpendicular to that of a constructed stair board, the upper end of the station board lower walls is connected with the station board, the lower end of the station board lower walls is connected with the upper end of a bottom board longitudinal beam, and the station board lower walls are used for supporting the station board;
the platform plate is provided with a platform plate chiseling hole (11), and the size and the shape of the platform plate chiseling hole are the same as those of the combined reserved bottom plate hole and the combined chiseling hole of the bottom plate;
the upper end of the transfer stair penetrates through the reserved hole of the bottom plate and then extends to the position of the chiseling hole of the platform plate, a constructed stair beam (12) is arranged at the upper end of the transfer stair, and the constructed stair beam is fixedly connected with the platform plate;
the upper end of the widened stair penetrates through the bottom plate chiseling hole and then extends to the platform plate chiseling hole, a widened stair beam (13) is arranged at the upper end of the widened stair, and the widened stair beam is fixedly connected with the platform plate;
the vertical distance between one end of the platform board in the width direction of the chiseling hole and the bottom plate longitudinal beam is 300-400 mm;
in the length direction parallel to the constructed stair tread, the constructed stair beam and the widened stair beam are coaxially arranged;
the two ends of the constructed stair beam are respectively provided with a constructed stair column (14), one end of the widened stair beam is connected with the constructed stair column, and the other end of the widened stair beam is provided with a widened stair column (15).
5. The transfer stair widening structure according to claim 4,
the platform board chisel is provided with a platform board hole side beam (16) except two ends of the hole in the length direction, and a bottom board longitudinal beam (4) is arranged outside two ends of the platform board in the width direction;
the platform plate hole edge beam is perpendicular to the bottom plate longitudinal beam, and two ends of the platform plate hole edge beam are fixedly connected with the lower wall of the platform plate respectively.
6. The transfer stair widening structure according to claim 1,
a constructed stair side wall (17) is arranged outside the other end of the constructed stair plates in the length direction, and the top of the constructed stair side wall is higher than the upper surface of the bottom plate;
widening side stair side walls (18) are arranged outside the other ends of the plurality of levels of widening stair boards in the length direction, and the tops of the widening side stair side walls are higher than the upper surface of the bottom plate;
a plurality of stair side wall stress main ribs and a plurality of stair side wall distribution ribs are arranged in the constructed stair side wall, the stair side wall stress main ribs extend from the upper end to the lower end of the constructed stair side wall, and the stair side wall distribution ribs extend from one end to the other end of the constructed stair side wall in the width direction;
a plurality of stair side wall stress main ribs and a plurality of stair side wall distribution ribs are also arranged in the widened side stair side wall, the stair side wall stress main ribs extend from the upper end to the lower end of the widened side stair side wall, and the stair side wall distribution ribs extend from one end to the other end of the widened side stair side wall in the width direction;
and the upper ends of the stressed main ribs of the side walls of the stairs are anchored into the longitudinal beam of the bottom plate.
7. The transfer stair widening structure according to claim 6,
the stair side wall distribution ribs are distributed in the middle of the constructed stair side wall and the middle of the height direction of the widened side stair side wall;
a water retaining bank (19) is arranged on the upper side surface of the bottom plate;
the side wall of the constructed stair is connected with one end of the water retaining bank, and the other end of the water retaining bank is connected with the side wall of the widened side stair to form a U-shaped water retaining structure.
8. The transfer stair widening structure according to claim 4,
equidistant arranged has been under construction in the stair tread a plurality of stair tread atress owner muscle (20) and a plurality of stair tread distribution muscle (21) of having under construction, have been under construction stair tread atress owner muscle by the one end of stair tread length direction of having under construction extends to the other end, have been under construction stair tread distribution muscle by the one end of stair tread width direction of having under construction extends to the other end.
9. The transfer stair widening structure according to claim 8,
the constructed stair board distribution ribs are arranged in the length direction of the constructed stair board at equal intervals;
a plurality of main broadening stair plate stress ribs (22) and a plurality of main broadening stair plate distribution ribs (23) are arranged in the broadening stair plates at equal intervals, the main broadening stair plate stress ribs extend from one end to the other end of the broadening stair plates in the length direction, and the distribution broadening stair plates extend from one end to the other end of the broadening stair plates in the width direction;
the widened stair board distribution ribs are arranged at equal intervals in the length direction of the widened stair board;
the length of the constructed stair tread stress main rib anchored into the constructed stair beam is 34d-38d, and the length of the widened stair tread stress main rib anchored into the widened stair beam is 34d-38 d.
10. The transfer stair widening structure according to any one of claims 1 to 9,
the constructed stair boards are connected with the widened stair boards through stair board structural ribs (6), and the stair board structural ribs are implanted into the constructed stair boards for 20d-22 d;
the space between the stair board structural ribs is 3-4 times of the space between the stair board stress main ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021211190.9U CN212453758U (en) | 2020-06-24 | 2020-06-24 | Widening structure of transfer stairs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021211190.9U CN212453758U (en) | 2020-06-24 | 2020-06-24 | Widening structure of transfer stairs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212453758U true CN212453758U (en) | 2021-02-02 |
Family
ID=74462588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021211190.9U Active CN212453758U (en) | 2020-06-24 | 2020-06-24 | Widening structure of transfer stairs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212453758U (en) |
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2020
- 2020-06-24 CN CN202021211190.9U patent/CN212453758U/en active Active
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